3) What are organic fertilizers?

April 08, 2024 4 min read

Engrais Organic

Everything You Need to Know about Organic Fertilizers: Nourish Your Garden with the Power of Nature!

Greetings to all gardening enthusiasts and environmental advocates! Today, let's delve into the vast universe of organic fertilizers to discover what makes them so special and how they can transform your garden into a flourishing green haven.

Organic fertilizers are nature's fuel for your plants. But what sets them apart from conventional fertilizers? Well, it's simple: organic fertilizers come from living and natural materials. Unlike chemical fertilizers, which are often derived from petroleum or minerals, organic fertilizers stem from renewable and biological sources.

Let's take some concrete examples. Chicken manure, derived from poultry droppings, is one of the most commonly used organic fertilizers. It is rich in essential nutrients such as nitrogen, phosphorus, and potassium, which are slowly absorbed by the soil to nourish your plants in the long term.

Next, there's worm humus, the hidden treasure of your garden. Earthworms transform organic matter into rich and fertile humus, full of beneficial microorganisms for your plants' health. Adding worm humus to your soil is like offering a feast to an entire community of microorganisms working in harmony to nourish your crops.

And what about seaweed? These wonders of nature are packed with minerals, trace elements, and growth hormones that stimulate plant growth and strengthen their resistance to diseases and pests. Seaweed is like superfood for your garden, bringing an explosion of life and vitality to your crops.

In summary, organic fertilizers are much more than simple fertilizers. They are the vital link between your garden and nature, an endless source of nutrients, life, and balance for your plants and soil. So why settle for chemicals when nature offers us a plethora of ecological and sustainable options ?

Continue to explore the wonders of organic farming with me on this blog, where we dive ever deeper into nature's secrets and eco-friendly solutions for more environmentally friendly gardening.

List of organic fertilizers :

Organic material



Pork bones


Pork bones are rich in phosphorus, promoting root and flower development. They are ideal for flowering crops and plants with strong root systems..

Chicken bones


Chicken bones are an excellent source of calcium and phosphorus. They help strengthen plant cell structure, promoting healthy and vigorous growth.

Fish bones


Fish bones are rich in phosphorus and calcium, as well as beneficial trace elements for plant growth. They are particularly effective for leafy vegetables.


Varies by ingredients

Compost is an organic mixture of decomposing plant materials. It provides a multitude of essential nutrients, promoting balanced growth and long-term soil fertility.



Kelp is a seaweed rich in potassium and micronutrients. It promotes plant growth, strengthens their immune system, and improves resistance to environmental stress.

Cow manure


Cow manure is a balanced source of nutrients, including nitrogen, phosphorus, and potassium. It improves soil structure and promotes healthy plant growth.

Sheep manure


Sheep manure is rich in nitrogen and phosphorus, making it an ideal fertilizer for crops requiring high nutrient levels, such as root vegetables and fruits.

Coffee grounds


Coffee grounds are a source of nitrogen, potassium, and phosphorus. They promote plant growth while improving soil structure and repelling pests such as slugs.

Dead leaves

Varies by species

Dead leaves decompose to form nutrient-rich humus, including nitrogen, potassium, and trace elements. They enrich the soil and promote healthy biodiversity.

Horse manure


Horse manure is rich in nitrogen and phosphorus, making it an excellent fertilizer for vegetable and leafy green growth.

Goat manure


Goat manure is similar to sheep manure in composition, providing a balanced mix of nitrogen, phosphorus, and potassium to nourish plants.

Bird droppings

Varies by species

Bird droppings, such as those from pigeons or chickens, are rich in nitrogen and phosphorus. They are ideal for enriching soil and promoting plant growth.

Coco, coir/peat


Coco coir is an eco-friendly alternative to traditional peat. It is rich in potassium and trace elements, promoting healthy and vigorous growth.

Bone meal


Bone meal is a concentrated source of phosphorus, ideal for crops needing a boost in root and flower development.

Wood ash

Varies by burned woods

Wood ash is rich in potassium and calcium, with traces of phosphorus and other trace elements. It is excellent for balancing soil pH and nourishing plants.

Dried blood


Dried blood is a pure nitrogen source, ideal for promoting rapid and vigorous plant growth, especially in leafy vegetables like lettuce and spinach.

Vegetable mulch

Varies by plants

Vegetable mulch is an excellent source of organic matter to enrich soil and improve its structure. It also promotes the growth of beneficial microorganisms.


Varies by product

Molasses is rich in natural sugars and nutrients. It promotes microbial activity in the soil, improving nutrient availability for plants.

Marine by-products

Varies by species

Marine by-products, such as crushed oyster shells or crustaceans, are rich in calcium, trace elements, and minerals. They improve soil structure and nourish plants.

Bat guano

Varies by type

Bat guano is an organic fertilizer rich in nitrogen, phosphorus, and potassium, as well as essential trace elements. It is known to promote vigorous growth and abundant flowering, especially in flowering plants. Bat guano can be used as a direct fertilizer or incorporated into the soil to improve its structure and fertility in the long term. It is also renowned for stimulating microbial activity in the soil, promoting optimal plant health. Different types of bat guano may vary in composition, with some being richer in nitrogen, while others are more balanced in nitrogen, phosphorus, and potassium. Overall, bat guano is a popular choice among organic gardeners for naturally and sustainably feeding plants.

" Don't forget to share your experiences and tips in the comments below. Together, let's cultivate a greener and healthier world, one plant at a time !"

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